The phrase "angel in" typically refers to someone who embodies qualities that are considered pure, kind, and selfless, much like the traditional concept of an angel. It can describe a person who performs good deeds, offers support to others, or brings positivity into difficult situations. Often, it is used to denote individuals who act as guardians or helpers in someone's life.
The word "angel" comes from the Latin "angelus," which is derived from the Greek word "angelos," meaning "messenger." The concept has roots in various religious texts, where angels are viewed as spiritual beings acting as intermediaries between God and humans.